Level-glass.



No. 800,990. PATENTED JULY 20,- 1007.

' Lw. PLIMPTON.

'LEVEL GLASS.r

APPLIUATION FILED DBO. 15, 1906.-

W/MMM? BY fue mmm: PETERS co., wAsmNaroN. n. c,

JAMES W. PLIMPTON, OF OIL CITY, PENNSYLVANIA.

LEVEL-GLASS.

Specication of Letters Patent.

Patented July 23, 1907.

Application filed December 15, 1906. Serial No. 348,082.

To all 'whom it may concern:

Be it known that I, J AMES W. PLIMPTON, a citizen of the United States of America, residing at Oil City, in the county of Venango and State of Pennsylvania, have invented certain new and useful Improvements in Level-Glasses, of which the following is a specification, reference being had therein to the accompanying drawing.

This invention relates to levels, and its object is to provide a device of this character of simple and inexpensive construction adapted to be reversed and viewed from either side.

The invention comprises improved means for securing the level glass in position, and in the construction of the glass-supporting frame to adapt it to contain liquid.

The improvement will be fully described hereinafter in connection with the accompanying drawing which forms a part of this specication, and its novel features will be dened in the appended claims.

In the drawing, Figure l is a side elevation of a level embodying the invention7 and Fig. 2 is a central vertical section of the same. i

The reference numeral l designates the wooden body portion or straight edge of the device provided with a circular opening to receive the level glass and its securing means.

The glass supporting frame comprises an inner cylinder 2 surrounded by a horizontal ilange 3, and an outer cylindrical shell or casing 4 externally screw-threaded for the attachment of rings 5, provided with threaded ianges 6. The glass plates 7 of the device are clamped on opposite sides of the frame by the flanged rings 5. The ange 3 serves as a partition to divide the space between the cylinder 2 and casing 4 into two compartments 8 and 9 adapted to contain liquid.

ndescribed may readily be reversed and viewed from either side.

The liquid compartments are supplied with liquid before the frame is inserted in place, and the removable plugs prevent leakage.

What I claim and desire to secure by Letters Patent, is:-

1. A level comprising a body portion or straight edge, provided with a circular opening, a frame arranged within said opening and consisting of concentric cylinders, a partition dividing the space between the cylinders into`two liquid compartments, glass covers for said compartments, and rings provided with threaded flanges for securing the glass covers in position.

2. A level comprising a body portion or straight edge provided with a circular opening, a frame arranged Within said opening and consisting of concentric cylinders, the outer one of which is screw threaded and formed with liquid inlets, a partition dividing the space between the cylinders into two compartments, glass plates serving as covers for said compartments and means for .securing the glass plates in position consisting of clamping rings having threaded flanges to engage the threads of the'outer cylinder.

In testimony whereof I atx my signature in the presence of two witnesses.

C. KLosTERMANN, 1 MAX H. SRoLoVITz. 

